This article covers the classic email editor which has been succeeded by the more powerful Design Studio. Voyado recommends using Design Studio for handling email sendouts.
You can either stop a sendout while it’s still “Scheduled”, or when it has status “In queue” or “Sending”.
If you discover a typo, a pricing error, or something else in a message that already has status “In queue”, "Waiting for evaluation", or “Sending”, you can cancel the sendout. Please note that this action will not revoke messages that have already been sent but only prevent any remaining messages from being dispatched. Consider it an emergency function.